What is the mentioned cause of the obesity problem of children？A．The food is unhealthy.B．C

Which of the following is NOT mentioned as a possible cause of lung diseases？A．The burning

Why does the professor mention that drought is often blamed as the cause of the Dust Bowl？

Which of the following is NOT mentioned in the passage as a cause of the holiday hazards？A

Which of the following is not mentioned as one of the factors causing dementia？A．Having Al

Which of the following is not mentioned by the author as one of many causes of stress in t

Which of the following is NOT mentioned as a caus